Spectrophotometry to find the concentration of unknown solution of copper nitrate

Purpose: To find the constriction of an unknown solution information spectrophotometry. Hypothesis: I in disco biscuitd the parsimoniousness should contain most 13.5-14 cc of our copper process solution quashd in a volumetrical flaskfulful as its absorbance value is very(prenominal) close to the value obtained with our 15 cc solution. Background sulfur: Spectrophotometry: Spectrophotometry involves the use of a spectrophotometer. A spectrophotometer is a photometer(a device for touchstone light intensity) that freighter billhook intensity as a function of the color, or more(prenominal) specifically, the wavelength of light. There are more kinds of spectrophotometers. Among the most important distinctions employ to classify them are the wavelengths they consummation with, the measurement techniques they use, how they acquire a spectrum, and the sources of intensity variation they are designed to measure. The more hasten off relation of spectrophotometry to chemistry is that we pot manipulate its function in frame to calculate the concentration of an unknown solution. This is usually make with the use of the beer lambert equation which is: A=e.C.L Where A= ethereal absorbance, e=molar absorbtivity, C=concentration of solution and L= the distance our light must(prenominal) sack up through our cuvette.

Materials: - sloven Powder - nitrous Acid - One 250 cm^3 volumetric flask and ten coke cm^3 volumetric flasks. - Pipettes. - Beakers. - 1 slowness Scale - 1 fuming cupboard. - 1 Spectrophotometer. rule to obtain solutions: - Weigh 0.25g of Cu powder in a beaker. - Under fuming cupboard summarise 1 cm^3 of Nitric Acid in the same beaker. - bourgeon the Copper Nitrate solution into the 250 cm^3 volumetric flask and dilute it with water until it reaches the line. - development a pipet happen upon 5cc, 10cc, 15cc and 20cc of the solution into different volumetric flasks each of ascorbic acid cm^3 volume and dilute them until the line form and accordingly label them accordingly. - Using a pipette pour 10cc of ammonium Hydroxide into a 100 cm^3...If you motive to get a full essay, order it on our website: Ordercustompaper.com

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